Added support for interpolating low res source data onto higher res destination tiles.
Added support for interpolating low res source data onto higher res destination tiles.


koshman86/osg,omega-hub/osg,ghub/osg,artoolkit/osg,omega-hub/osg,ghub/osg,koshman86/osg,stmh/osg,stmh/osg,stmh/osg,XiaoCC/osg,stmh/osg,artoolkit/osg,XiaoCC/osg,ghub/osg,koshman86/osg,ghub/osg,artoolkit/osg,ntoand/osg,koshman86/osg,stmh/osg,omega-hub/osg,XiaoCC/osg,XiaoCC/osg,ntoand/osg,ntoand/osg,artoolkit/osg,omega-hub/osg,XiaoCC/osg,ntoand/osg